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POMONA, CA - JUNE 06: Defense Advanced Research Projects Agency (DARPA) Tactical Technology Office Assistant Director Pamela Melroy appluads for the winners of the DARPA Robotics Challenge at the Fairplex June 6, 2015 in Pomona, California. Organized by DARPA, the Pentagon's science research group, 24 teams from aorund the world are competing for $3.5 million in prize money that will be awarded to the robots that best respond to natural and man-made disasters. (Photo by Chip Somodevilla/Getty Images)